pub const DEFAULT_HTML_HEADER: &str = "HTTP/1.1 200 OK\nContent-Type: text/html";
pub const DEFAULT_JSON_HEADER: &str = "HTTP/1.1 200 OK\nContent-Type: application/json";
pub const DEFAULT_PLAIN_TEXT_HEADER: &str = "HTTP/1.1 200 OK\nContent-Type: text/plain";
pub const ERROR_403_HEADER: &str = "HTTP/1.1 403 Forbidden\nContent-Type: text/html";
pub const DEFAULT_500_HEADER: &str = "HTTP/1.1 500 Internal Server Error\nContent-Type: text/html";
pub const ERROR_404_HEADER: &str = "HTTP/1.1 404 Not Found\nContent-Type: text/html";
pub const DEFAULT_301_HEADER: &str = "HTTP/1.1 301 Moved Permanently\nContent-Type: text/html";
pub const DEFAULT_400_HEADER: &str = "HTTP/1.1 400 Bad Request\nContent-Type: text/html";
pub const DEFAULT_401_HEADER: &str = "HTTP/1.1 401 Unauthorized\nContent-Type: text/html";
pub const DEFAULT_402_HEADER: &str = "HTTP/1.1 402 Payment Required\nContent-Type: text/html";
pub const DEFAULT_503_HEADER: &str = "HTTP/1.1 503 Service Unavailable\nContent-Type: text/html";